Hyothenars And Thenars

Question 1

Flexor digiti minimi

Answer 1

MA: flex at MCP

PA: hook of hamate & flexor reticulum

DA: base of 5th proximal phalanx

N: ulnar deep branch C8 T1

Question 2

Abductor digiti minimi

Answer 2

MA: abduct 5th digit at MCP

PA: pisiform

DA: base of proximal phalanx 5th digit

N: ulnar deep branch C8 T1

Question 3

Opponens Digiti Minimi

Answer 3

MA: opposition of 5th digit at CMC Joint

PA: hook of hamate and flexor reticulum

DA: medial border of fifth metacarpal

N: ulnar deep branch C8 T1

Question 4

Abductor pollicis brevis

Answer 4

MA: Abduct thumb at CMC and MCP joint, assist with opposition

PA: scaphoid trapezium and flexor reticulum

DA: base of proximal phalanx of thumb

N: Median Recurrent branch C8 T1

Question 5

Flexor Pollicis brevis

Answer 5

MA: flex thumb at CMC and MCP joints, help with opposition

PA: scaphoid trapezium and flexor reticulum

DA: base of proximal phalanx of thumb

N: Medial recurrent C8 T1 and Ulnar deep branch C8 T1

Question 6

Opponens Pollicis

Answer 6

MA: opposition of thumb (at CMC joint?)

PA: scaphoid trapezium and flexor reticulum

DA: 1st metacarpal

N: median recurrent C8 T1